Kumar-2011-Research-Methodology_-A-Step-by-Step-Guide-for-Beginners

Chapter 16: Displaying Data 303
25
Number of respondents
20
15
10
5
0
10–14
15–19 20–24 25–29 30–34 35–39 40–44 45–49 50–54 55–59 60–64
Age of respondents
Figure 16.6
The frequency polygon
100
90
Number of respondents
80
70
60
50
40
30
20
10
0
10–14
15–19 20–24 25–29 30–34 35–39 40–44 45–49 50–54 55–59 60–64
Age of respondents
Figure 16.7
The cumulative frequency polygon